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He answered 90 of 120 questions on a test. If he is sure that he answered 70% of the 90 correctly, how many of the remaining questions must he answer correctly to get 70% of the…

He answered 90 of 120 questions on a test. If he is sure that he answered 70% of the 90 correctly, how many of the remaining questions must he answer correctly to get 70% of the…
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He answered 90 of 120 questions on a test. If he is sure that he answered 70% of the 90 correctly, how many of the remaining questions must he answer correctly to get 70% of the exam right?

PLEASE HURRYYYY AND HELPPPPPPPP

User Jacob Raccuia
by
7.3k points

1 Answer

3 votes

Answer: he must answer 21 questions

Step-by-step explanation: 0.70 * 120 = 84

84 - 63 = 21

User Johan Donne
by
8.0k points
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